This session primarily focuses on neutral atmospheres and exospheres of terrestrial bodies other than the Earth. This includes not only Venus and Mars but also exoplanets with comparable envelopes and satellites, such as Titan, which has a dense atmosphere. We welcome contributions on processes that affect the atmospheres of these bodies, from the surface to the exosphere. We invite abstracts concerning observations, both from Earth and from space, modelling and theoretical studies, or laboratory work. Comparative planetology abstracts will be particularly appreciated.